I agree that he must have just wanted to move on. It would have been relatively easy to just alter the dialog a bit and suddenly he's living with people he's not related to. To DS's credit though, at least he threw us a bone and gave us 1 more update where Max bangs Mom all over the house. I think that's what most people were wanting, even if the Lisa storyline ended up as a dead end.If I were a developer, I wouldn't trust Patreon not to crack down even more, especially on these games that changed everything to "roommates" and "landladies", but for which there are patches available or secret ways of restoring the incest content. The trend in general is for things to become more and more restrictive about things like that, and Patreon has already gone through at least two rounds of cracking down on games like that. I can't imagine that it's going to end there. Until there's a viable alternative to Patreon where developers of games like Big Brother can make their games without fear of suddenly being suspended or even banned, we're going to see more people moving completely away from incest.
Even with that belief, I still think DS was just tired of Big Brother, the incest genre in general, and really wanted to focus on Glamour. Patreon and other factors just made it a much easier decision to make to themselves and justify to their fans.
I disagree about the rules getting much more strict on Patreon though. I really don't think they can do much more unless they just decide no more adult content of any kind. You can't tell relationship from a pic so there's nothing they can do to stop people from just replacing mom/sister/etc with landlady/friend's mom/foreign exchange student/foster kid/whatever. Even if it's blatantly obvious that people could just change it to be incest there's really nothing they can do about it.
From the pics I've seen for Glamour it doesn't hold much interest for me but that's one of the perks of being your own boss. You can do what you want...